header {
    display: flex;
    justify-content: space-around;
    align-items: center;
    position: sticky;
    top: 0;
    left: 0;

    background-color: rgb(197, 221, 213);
}

.active {
    background-color: blueviolet;
}

header .logo img {
    width: 80px;
    height: 80px;
}

header ul {
    display: flex;
    padding: 0;
}

header ul li {
    display: block;
    padding: 4px 6px;

}

header ul li a {
    text-decoration: none;
}


header ul li:hover {
    background-color: aquamarine;
}